| 摘要 |
The present invention relates to a paper medium. The paper medium can reappear speech recoding by speech compressing, error modifying, interleaving modulation, scrambling modulation to minimize area of the speech code. Furthermore, the significant words or pattern for human eyes are inserted into the insignificant speech code for human eyes. The added value can be improved by combining the space of print having speech code and the space of advertisement, and the obstacles are decreased by inserting the speech code into the paper medium.
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